干旱区生态环境知识资源中心(Arid): Characteristics of Hydrologic Transfer between Soil and Atmosphere over Gobi near Oasis at the End of Summer

Arid

DOI	10.1007/BF02690802
	Characteristics of Hydrologic Transfer between Soil and Atmosphere over Gobi near Oasis at the End of Summer
其他题名	绿洲周边荒漠戈壁夏末土壤-大气水分传输特征
	Zhang Qiang; Song Lianchun; Huang Ronghui; Wei Guoan; Wang Sheng; Tian Hui
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2003
卷号	20 期号:3 页码:442-452
中文摘要	利用"我国西北干旱区陆-气相互作用试验"2000年8-9月在甘肃敦煌地区戈壁滩上取得的野外观测资料,分析了临近绿洲的戈壁土壤湿度和温度特征以及相对应的大气湿度特征,发现土壤热量活动层约为5 cm厚,比一般土壤要薄得多;临近绿洲的荒漠戈壁上,不仅近地层大气多为逆湿,而且浅层土壤有时也出现逆湿.土壤湿度日变化能清楚地被区分为湿维持、水分损失、干维持和水分补充等四个阶段.土壤湿度廓线表明:土壤水分活动层厚度约为10 m;湿维持阶段的浅层土壤逆湿是土壤湿度廓线最主要的结构特征,这一土壤湿度结构预示着夜间土壤可能通过凝结吸收大气水分,它与白天的土壤水分蒸发共同构成土壤对大气水分的"呼吸"过程.土壤逆湿的形成与土壤温度状态、大气逆湿强度和大气稳定度都有关.
英文摘要	By utilizing the data observed at Dunhuang during August and September 2000 in the "Field Experi-ment on Interaction between Land and Atmosphere in the Arid Region of Northwest China (FEILARNC)",the characteristics of the soil moisture, temperature, and atmospheric humidity are analyzed. It is foundthat the thickness of the soil temperature active layer is about 5 cm and much thinner than is typical,that not only the atmospheric humidity gradient is often inverted but also the soil moisture gradient inthe shallow layer in the Gobi near oasis, that the diurnal variation of soil moisture can be divided into thefour stages that are called the wet stage, the losing-water stage, the dry stage, and the attaining-waterstage. It is shown that in soil moisture profiles, the depth of the soil moisture active layer is about 10 cmand soil moisture inversion is the main feature in the shallow layer during the wet stage. Such a featureas soil moisture inversion indicates that soil in the shallow layer can inhale moisture from the air throughcondensation in the nighttime and exhale moisture to the air through evaporation in the daytime. Thecondensation and evaporation constitute together the full respiration process of moisture on the ground.The formation of soil moisture inversion is related with the state of soil temperature and moisture, theintensity of atmospheric humidity inversion, and the atmospheric thermodynamic stability.
中文关键词	戈壁 ; 活动层 ; 逆湿 ; "呼吸"过程 ; 土壤-大气水分传输
英文关键词	Gobi soil active layer atmosphere specific humidity inversion soil moisture inversion res-piration
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:1575992
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334856
作者单位	Zhang Qiang, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, Gansu 730000, China.; Song Lianchun, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, Gansu 730000, China.; Huang Ronghui, Institute of Atmospheric Physics, Chinese Academy of Sciences, BeiJing 100029, China.; Wei Guoan, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Wang Sheng, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Tian Hui, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Zhang Qiang,Song Lianchun,Huang Ronghui,et al. Characteristics of Hydrologic Transfer between Soil and Atmosphere over Gobi near Oasis at the End of Summer[J],2003,20(3):442-452.
APA	Zhang Qiang,Song Lianchun,Huang Ronghui,Wei Guoan,Wang Sheng,&Tian Hui.(2003).Characteristics of Hydrologic Transfer between Soil and Atmosphere over Gobi near Oasis at the End of Summer.Advances in Atmospheric Sciences,20(3),442-452.
MLA	Zhang Qiang,et al."Characteristics of Hydrologic Transfer between Soil and Atmosphere over Gobi near Oasis at the End of Summer".Advances in Atmospheric Sciences 20.3(2003):442-452.